| #!/usr/bin/env python |
| |
| import unittest |
| import socket |
| |
| from framework import VppTestCase, VppTestRunner |
| from vpp_ip_route import VppIpRoute, VppRoutePath |
| from vpp_papi_provider import L2_PORT_TYPE, BRIDGE_FLAGS |
| |
| from scapy.packet import Raw |
| from scapy.layers.l2 import Ether |
| from scapy.layers.inet import IP, UDP |
| |
| |
| class TestL2Flood(VppTestCase): |
| """ L2-flood """ |
| |
| def setUp(self): |
| super(TestL2Flood, self).setUp() |
| |
| # 12 l2 interface and one l3 |
| self.create_pg_interfaces(range(13)) |
| self.create_loopback_interfaces(1) |
| |
| for i in self.pg_interfaces: |
| i.admin_up() |
| for i in self.lo_interfaces: |
| i.admin_up() |
| |
| self.pg12.config_ip4() |
| self.pg12.resolve_arp() |
| self.loop0.config_ip4() |
| |
| def tearDown(self): |
| self.pg12.unconfig_ip4() |
| self.loop0.unconfig_ip4() |
| |
| for i in self.pg_interfaces: |
| i.admin_down() |
| for i in self.lo_interfaces: |
| i.admin_down() |
| super(TestL2Flood, self).tearDown() |
| |
| def test_flood(self): |
| """ L2 Flood Tests """ |
| |
| # |
| # Create a single bridge Domain |
| # |
| self.vapi.bridge_domain_add_del(1) |
| |
| # |
| # add each interface to the BD. 3 interfaces per split horizon group |
| # |
| for i in self.pg_interfaces[0:4]: |
| self.vapi.sw_interface_set_l2_bridge(i.sw_if_index, 1, 0) |
| for i in self.pg_interfaces[4:8]: |
| self.vapi.sw_interface_set_l2_bridge(i.sw_if_index, 1, 1) |
| for i in self.pg_interfaces[8:12]: |
| self.vapi.sw_interface_set_l2_bridge(i.sw_if_index, 1, 2) |
| for i in self.lo_interfaces: |
| self.vapi.sw_interface_set_l2_bridge(i.sw_if_index, 1, 2, |
| port_type=L2_PORT_TYPE.BVI) |
| |
| p = (Ether(dst="ff:ff:ff:ff:ff:ff", |
| src="00:00:de:ad:be:ef") / |
| IP(src="10.10.10.10", dst="1.1.1.1") / |
| UDP(sport=1234, dport=1234) / |
| Raw('\xa5' * 100)) |
| |
| # |
| # input on pg0 expect copies on pg1->11 |
| # this is in SHG=0 so its flooded to all, expect the pg0 since that's |
| # the ingress link |
| # |
| self.pg0.add_stream(p*65) |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| |
| for i in self.pg_interfaces[1:12]: |
| rx0 = i.get_capture(65, timeout=1) |
| |
| # |
| # input on pg4 (SHG=1) expect copies on pg0->3 (SHG=0) |
| # and pg8->11 (SHG=2) |
| # |
| self.pg4.add_stream(p*65) |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| |
| for i in self.pg_interfaces[:4]: |
| rx0 = i.get_capture(65, timeout=1) |
| for i in self.pg_interfaces[8:12]: |
| rx0 = i.get_capture(65, timeout=1) |
| for i in self.pg_interfaces[4:8]: |
| i.assert_nothing_captured(remark="Different SH group") |
| |
| # |
| # An IP route so the packet that hits the BVI is sent out of pg12 |
| # |
| ip_route = VppIpRoute(self, "1.1.1.1", 32, |
| [VppRoutePath(self.pg12.remote_ip4, |
| self.pg12.sw_if_index)]) |
| ip_route.add_vpp_config() |
| |
| self.logger.info(self.vapi.cli("sh bridge 1 detail")) |
| |
| # |
| # input on pg0 expect copies on pg1->12 |
| # this is in SHG=0 so its flooded to all, expect the pg0 since that's |
| # the ingress link |
| # |
| self.pg0.add_stream(p*65) |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| |
| for i in self.pg_interfaces[1:]: |
| rx0 = i.get_capture(65, timeout=1) |
| |
| # |
| # input on pg4 (SHG=1) expect copies on pg0->3 (SHG=0) |
| # and pg8->12 (SHG=2) |
| # |
| self.pg4.add_stream(p*65) |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| |
| for i in self.pg_interfaces[:4]: |
| rx0 = i.get_capture(65, timeout=1) |
| for i in self.pg_interfaces[8:13]: |
| rx0 = i.get_capture(65, timeout=1) |
| for i in self.pg_interfaces[4:8]: |
| i.assert_nothing_captured(remark="Different SH group") |
| |
| # |
| # cleanup |
| # |
| for i in self.pg_interfaces[:12]: |
| self.vapi.sw_interface_set_l2_bridge(i.sw_if_index, 1, enable=0) |
| for i in self.lo_interfaces: |
| self.vapi.sw_interface_set_l2_bridge(i.sw_if_index, 1, 2, |
| port_type=L2_PORT_TYPE.BVI, |
| enable=0) |
| |
| self.vapi.bridge_domain_add_del(1, is_add=0) |
| |
| def test_uu_fwd(self): |
| """ UU Flood """ |
| |
| # |
| # Create a single bridge Domain |
| # |
| self.vapi.bridge_domain_add_del(1, uu_flood=1) |
| |
| # |
| # add each interface to the BD. 3 interfaces per split horizon group |
| # |
| for i in self.pg_interfaces[0:4]: |
| self.vapi.sw_interface_set_l2_bridge(i.sw_if_index, 1, 0) |
| |
| # |
| # an unknown unicast packet |
| # |
| p_uu = (Ether(dst="00:00:00:c1:5c:00", |
| src="00:00:de:ad:be:ef") / |
| IP(src="10.10.10.10", dst="1.1.1.1") / |
| UDP(sport=1234, dport=1234) / |
| Raw('\xa5' * 100)) |
| |
| # |
| # input on pg0, expected copies on pg1->4 |
| # |
| self.pg0.add_stream(p_uu*65) |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| |
| for i in self.pg_interfaces[1:4]: |
| rx0 = i.get_capture(65, timeout=1) |
| |
| # |
| # use pg8 as the uu-fwd interface |
| # |
| self.vapi.sw_interface_set_l2_bridge(self.pg8.sw_if_index, 1, 0, |
| port_type=L2_PORT_TYPE.UU_FWD) |
| |
| # |
| # expect the UU packet on the uu-fwd interface and not be flooded |
| # |
| self.pg0.add_stream(p_uu*65) |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| |
| rx0 = self.pg8.get_capture(65, timeout=1) |
| |
| for i in self.pg_interfaces[0:4]: |
| i.assert_nothing_captured(remark="UU not flooded") |
| |
| # |
| # remove the uu-fwd interface and expect UU to be flooded again |
| # |
| self.vapi.sw_interface_set_l2_bridge(self.pg8.sw_if_index, 1, 0, |
| port_type=L2_PORT_TYPE.UU_FWD, |
| enable=0) |
| |
| self.pg0.add_stream(p_uu*65) |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| |
| for i in self.pg_interfaces[1:4]: |
| rx0 = i.get_capture(65, timeout=1) |
| |
| # |
| # change the BD config to not support UU-flood |
| # |
| self.vapi.bridge_flags(1, 0, BRIDGE_FLAGS.UU_FLOOD) |
| |
| self.send_and_assert_no_replies(self.pg0, p_uu) |
| |
| # |
| # re-add the uu-fwd interface |
| # |
| self.vapi.sw_interface_set_l2_bridge(self.pg8.sw_if_index, 1, 0, |
| port_type=L2_PORT_TYPE.UU_FWD) |
| self.logger.info(self.vapi.cli("sh bridge 1 detail")) |
| |
| self.pg0.add_stream(p_uu*65) |
| self.pg_enable_capture(self.pg_interfaces) |
| self.pg_start() |
| |
| rx0 = self.pg8.get_capture(65, timeout=1) |
| |
| for i in self.pg_interfaces[0:4]: |
| i.assert_nothing_captured(remark="UU not flooded") |
| |
| # |
| # remove the uu-fwd interface |
| # |
| self.vapi.sw_interface_set_l2_bridge(self.pg8.sw_if_index, 1, 0, |
| port_type=L2_PORT_TYPE.UU_FWD, |
| enable=0) |
| self.send_and_assert_no_replies(self.pg0, p_uu) |
| |
| # |
| # cleanup |
| # |
| for i in self.pg_interfaces[:4]: |
| self.vapi.sw_interface_set_l2_bridge(i.sw_if_index, 1, enable=0) |
| |
| self.vapi.bridge_domain_add_del(1, is_add=0) |
| |
| |
| if __name__ == '__main__': |
| unittest.main(testRunner=VppTestRunner) |